TYPE : Stearable parabolic antenna

MOUNT : alt-az 

OPTICS UP TO 1 Ghz: Prime focus 

             OBOVE 1 Ghz : Cassegrain system 

RAIL TRACK DIAMETER : 240 m

MAX HEIGHT : 37.6 m 

PANELS ( 7 RINGS ) : 64+64+64+64+32+32+16=336

SIZE  224: * ( 120 : 160 ) cm 

ACCURACY OF MANUFACTURING PANELS (RMS ) : < 0.35 mm 

ACCURACY OF SURFACE ADJUSTEMENT WITH A LAZER AND THEODOLITE : < 0.2 mm 

ACCURACY OF PANELS SETTING WITH THE HELP OF A TEMPLETE      ( RMS ) : 1 mm 

ACCURACY OF FABRICATION OF SUBREFLECTOR : 0.05 mm 

ACCURACY OF ALIGNEMENT OF THE SUBREFLECTOR AXIS WITH THE PARABOLOID : 0.1 mm 

ACCURACY OF TRACK LEVELING : 0.3 mm 

ACCURACY OF ELEVATION AXIS LEVELING : 0.3 mm 

GRAVITATIONAL DEFORMATION ( DISH EDGE ) : 4.2 mm 

HOMOLOGY IMPERFECTIONS AT THE ZENITH : 0.11 mm 

HOMOLOGY IMPERFECTIONS AT THE HORIZON : 0.14 mm 

ELEVATION SKY COVERAGE : +2 : +95 % 

AZIMUTH SKY COVERAGE ( ZERO SOUTH ) : » 270 % 

RANGE OF MOTION OF SUBREFLECTOR ALONG THE AXIS : ± 60 mm 

RANGE OF ROTATION OF SUBREFLECTOR AROUND 2 AXIS :

            VELOCITY IN THE ELEVATION AXIS   0.004 : 14.7 ° / min 

            VELOCITY IN THE AZIMUTH AXIS       0.008 : 31 ° / min 

ACCURACY OF TRACKING ( BOTH AXIS ) : 0.002 °  

APERATURE BLOCKAGE BY THE SUBREFLECTOR AND ITS     SUPPORT : 8 % 

TOTAL WEIGHT IN RAIL TRACK : 530 t 

WEIGHT IN THE ELEVATION AXIS BEARINGS : 230 t 

WEIGHT IN THE ELECTRICAL DEVICES : 2 t 

WEIGHT OF CENTRAL CABIN APPARATUS : 9.4 t 

WEIGHT OF STEEL RAILS ( 180 mm IN WIDTH ) : 42.5 t 

WEIGHT OF STRUCTURE FOR MAINTANANCE OF THE SUBREFLECTOR: 16 t 

TEMERATURE RANGE : - 25°C to 35°C 

MAXIMUM ICE COVERAGE : 2 cm 

SURVIVAL WIND VELOCITY : 56 m/s 

OPERATING WIND VELOCITY : 16 m/s 

MAIN REFLECTOR DIAMETER : d=32 m 

FOCAL LENGTH : f=11.2 m 

f/d RATIO : 0.35 

DEPTH OF DISH : H=sqr (d)/16*f = 5.7143 m 

SUBTENDED ANGLE : 2*q = 4*arctg d/4*f = 142.1507°  

TOTAL SURFACE AREA : 899.45 m 

APERATURE COLLECTING AREA : 804.25 m 

EQUATION OF THE PARABOLA : r =    4f ( f=2 )  = 2f tg ( q/2 ) 

Cassegrain module :

DIAMETER OF THE HYPERBOLIC SUBREFLECTOR : d = 3.2 m 

HEIGHT OF THE SECOND FOCUS ABOVE THE DISH VERTEX : h = 1 m 

ANGLE SUBTENDED BY THE SUBREFLECTOR : 18.8256°  

EFECTIVE FOCAL LENGTH : F = 97.1729 m

RADIO TELESCOPE MAGNIFICATION : F/f = 8.6762 

FOCI SEPERATION : 2C = f-h = 10.2 m 

EXCENTRICITY OF THE HYPERBOLE : c/a = (F+f)/(F-f) = 1.2605 

INCLINATION OF THE ASSYMPTOTE : a = arcos(a/c) = arcos (F-f)/(F+f) = 37.5°

DISTANCE OF THE HYPERBOLOID VERTEX FROM ITS FOCI :

c-a=1.0541 m
c+a=9.1459 m

SUBREFLECTOR DEPTH : d = 0.05056 m 

RAY PATH DIFERECE TO THE FOCI : (f-h)*a/c = 8.0917 m 

TOTAL SUBREFLECTOR SURFACE AREA : A = 8.7728 m 

APERATURE BLOCKAGE BY THE SUBREFLECTOR : 8.425 m